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What Is a 30ml AuNic VG Salt Shot?

A 30ml AuNic VG salt shot is a bottle of concentrated nicotine salt suspended in a vegetable glycerine base. It contains no flavouring — its sole purpose is to be poured into a 60ml longfill bottle that already contains 30ml of concentrated flavouring, filling the remaining 30ml of space and creating a complete e-liquid.

AuNic makes two 30ml salt shot variants for the South African market: 50mg (25mg additive) and 100mg (50mg additive). Both are VG-based, which means they maintain a thick consistency when mixed into high-VG longfills. The "additive" figure in brackets is the critical number — it tells you the final nicotine strength after mixing. The larger number on the front of the bottle is the concentration inside the shot itself, before dilution.

At a Glance

The Maths — Why the Label Says 50mg but Makes 25mg

This is the single most common point of confusion for new longfill mixers. The number on the front of the bottle — 50mg or 100mg — describes the nicotine concentration of the shot itself. Because you are diluting that shot by mixing it with an equal volume of nicotine-free flavour concentrate, the final concentration is exactly half.

Here is how the two AuNic 30ml variants break down in practice:

The bracketed "additive" figure is the manufacturer trying to help you — it is the final strength you will achieve when the shot is used as intended. But many buyers see "50mg" on the label and assume they are buying 50mg finished liquid. They are not. They are buying a 50mg concentrate that dilutes to 25mg. Always look at the number in brackets, or simply halve the front-of-bottle number.

Why 30ml? The Longfill Connection

The 30ml shot size is not random. It is designed to pair perfectly with the 60ml longfill format that dominates the South African market. A 60ml longfill bottle contains 30ml of concentrated flavouring and 30ml of empty space. The 30ml AuNic shot fills that space exactly.

This 1:1 ratio is what makes the maths so clean. You do not need to measure, calculate percentages, or decant excess liquid. You simply pour the entire shot into the longfill bottle, shake, and vape. The 30ml shot is the "easy mode" of nicotine mixing — it removes every variable except the strength you choose.

Which Strength Should You Choose?

The right shot depends on your device, your smoking history, and what you are trying to achieve.

25mg final (50mg shot): This is the stepping-stone strength. If you are currently vaping 50mg disposables and want to reduce your nicotine intake without changing your device or habits, the 25mg final liquid delivers roughly half the nicotine per puff. It is also the right choice for moderate smokers (10–15 cigarettes per day) who want satisfying nicotine delivery without the intensity of 50mg.

50mg final (100mg shot): This matches the nicotine strength found in most South African disposable vapes and prefilled pod systems. If you are switching from disposables to longfills and want an identical experience, this is the shot to buy. It is also the right choice for heavy smokers (20+ cigarettes per day) who need maximum nicotine presence to avoid cravings.

How to Mix a 30ml AuNic VG Shot — Step by Step

The process is deliberately simple, but precision matters. Here is the exact method:

Common Mistakes to Avoid

• 1
  Thinking the bottle strength is the final strength

  A 100mg shot makes 50mg final liquid, not 100mg. A 50mg shot makes 25mg final liquid, not 50mg. Always halve the bottle strength, or read the bracketed "additive" figure. This is the most expensive mistake new mixers make — buying a 100mg shot expecting 100mg liquid and ending up with 50mg.
• 2
  Using a 30ml shot in a 30ml longfill

  A 30ml longfill contains 15ml of concentrate and 15ml of space. Adding a 30ml shot overfills the bottle and dilutes the flavour to half its intended intensity while creating a nicotine strength lower than calculated. Match shot size to longfill size: 15ml for 30ml longfills, 30ml for 60ml longfills.
• 3
  Not shaking long enough

  VG-based nicotine shots are viscous. A quick 10-second shake is not enough. Minimum 60 seconds of vigorous shaking is required for even distribution. If you notice the liquid looks layered or streaky, shake more.
• 4
  Using a VG shot in a PG-heavy longfill

  If your longfill is designed for a 50/50 final ratio, adding a pure VG shot pushes the ratio toward higher VG than intended. This can cause slow wicking in tight pod coils. Check your longfill's target ratio before choosing your shot base. Most pod longfills are designed for 50/50 — a PG-based shot may be more appropriate.
• 5
  Storing mixed liquid incorrectly

  Nicotine oxidises when exposed to heat, light, and air. Store your mixed longfill in a cool, dark cupboard with the cap tightly sealed. A bottle left on a windowsill or in a hot car will darken and develop a peppery taste within days.

Which Devices Work with 30ml Mixed Longfills?

Because 30ml AuNic VG salt shots are typically mixed into longfills targeting a 50/50 or high-VG ratio, the finished liquid suits specific device types:

• ✓
  Pod systems and MTL devices (10–25W)

  The intended home for salt nic longfills. Devices like the Vaporesso XROS, Uwell Caliburn, OXVA XLIM, and SMOK Novo handle 25mg–50mg salt nic at low wattage perfectly. The restricted airflow and small coils deliver satisfying nicotine without harshness.
• ✓
  Refillable MTL tanks (1.0Ω–1.4Ω)

  Traditional MTL tanks with higher-resistance coils suit this liquid well, provided the VG ratio does not exceed 60%. Check your tank's recommended VG/PG ratio before filling.
• ✗
  Sub-ohm tanks and DTL devices (30W+)

  Avoid using 25mg or 50mg salt nic in sub-ohm tanks. The smooth delivery allows you to inhale far more nicotine than intended, which can cause dizziness, nausea, and headaches. For sub-ohm, use freebase shots at 3mg–6mg.

Cost Breakdown — 30ml Shot vs Pre-Mixed

The financial case for longfills with 30ml shots is strong. Here is how the numbers work for a typical South African pod vaper:

The per-millilitre cost of a longfill with 30ml shot is comparable to or slightly cheaper than pre-mixed 10ml bottles, with the added benefit of choosing your exact strength. The real savings come when switching from disposables — a 60ml longfill mixed with a 30ml shot delivers roughly 6–12 disposable equivalents for a fraction of the price.

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